I would think the splitters are in the back seat. That is how the Hot Wheels, and ZL1 is, I would assume these are similar. They don't want them to drag when unloading, which happens...a lot. Probably installed during PDI.

"But, House Mormont remembers. The North remembers! We know no King but the King of the North whose name is Stark. I don't care if he's a bastard. Ned Stark's blood runs through his veins. He's my king–from this day until his last day."